以硫酸铜溶液作电解液，对含有杂质Fe、Zn、Ag的粗铜进行电解精炼．下列叙述正确的是_刷题宝

题干

以硫酸铜溶液作电解液，对含有杂质Fe、Zn、Ag的粗铜进行电解精炼．下列叙述正确的是（）

A：粗铜与直流电源负极相连

B：相同时间内阳极质量变化与阴极质量变化可能不同

C：硫酸铜溶液浓度始终保持不变

D：杂质Ag以Ag₂SO₄的形式沉入电解槽形成“阳极泥”

上一题下一题 0.0难度选择题更新时间:2018-10-26 09:12:22

答案(点此获取答案解析）

B

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